Unable to use http &#8211; during bittorrent

I’m unable to use the Internet while I have been running bittorrent for about 6 hours. Bittorrent run fine but I can’t browse, update anti-virus, check mail or anything.
I tried Alchemy Pre5.3 from Sveasoft and there I have no trouble at all.
I like HyperWRT a lot, but I “must” be able to use the Internet/browser while I’m using bittorrent. Is there anyway to fix this? Or maybe I just have to change back to Sveasoft firmware.